某型履带式无人战车通过性与射击稳定性仿真及优化研究

对某型履带式无人战车的通过性及射击稳定性进行研究,基于RecurDyn仿真平台建立战车的三维动力学模型,结合设计指标要求,构建不同行驶工况的路况模型,进行越障、越壕、爬坡等通过性及射击稳定性的仿真分析。仿真结果表明,该战车的初始设计方案基本可以满足指标要求,但存在越障时战车上仰姿态过高、落地时受到的冲击过大、越壕时诱导轮受到严重磕碰等问题,设计方案还应进一步改进。通过对仿真动画和战车俯仰角以及相关部件的受力曲线进行分析,对负重轮的布局进行改进设计,将第2组负重轮及其悬挂的装配位置向车首方向前移0.45 m,改进后的战车通过性得到了显著提高,且稳定性未受到任何不利影响。研究结果可作为无人战车智能环境感知与自主机动技术的研究基础,为相关车辆的底盘行驶系统设计提供一定参考。

Study on Simulation and Optimization of Trafficability and Firing Stability of a Tracked Unmanned Combat Vehicle

Trafficability and firing stability of a tracked unmanned combat vehicle are studied based on RecurDyn simulation platform,with a road model for different driving conditions in combination constructed according to the requirements of the design indicators,and with simulation analysis conducted of the trafficability and firing stability of barrier crossing and trench overrunning as well as slope clim-bing,etc.The simulation results show that the initial design of the vehicle can basically meet the target requirements.However,there are problems such as the elevation of the vehicle in the course of cros-sing the barrier,the impact on the ground being too great in the course of landing,and the guide wheel being severely bumped in the course of crossing the trench.Therefore,the scheme design should be further improved.By analyzing the simulated animation,the pitch angle and the load curve of the cha-riot and related components,the layout of the load wheel was improved and the assembly position of the second group of load wheel and its suspension was moved forward by 0.45 m towards the front of the vehicle,and the improved vehicle trafficability was significantly improved without any adverse effect on stability.The research results can be used as the basis for the research of intelligent environment perception and autonomous maneuvering technology for unmanned combat vehicles,providing some refe-rence for the design of the chassis driving system of related vehicles.